The document discusses the elements, types, and modes of communication. It aims to teach students about the importance of communication and help them understand different types. The key elements of communication are the sender, message, channel, receiver, and feedback. The types include verbal/oral communication using words, written communication through reports and emails, and non-verbal communication comprising kinesics, proxemics, chronemics, and paralingual cues. The modes are verbal communication using spoken words and non-verbal communication exchanging messages without words, with the latter accounting for 80-90% of communication.